Plug strip



FIG. 1 is a perspective view of a plug strip, showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a front elevational view;

FIG. 5 is a left-hand end elevational view; and,

FIG. 6 is a right-hand end elevational view thereof. 

The ornamental design for a plug strip, as shown and described. 